Week 8 - Various Applications of Lasers, Laser Safety and Summary

Laser Fundamentals and Applications - - Unit 9 ... https://onlinecourses.nptel.ac.in/noc19_cy13/uni...

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The due date for submitting this assignment has passed. Course As per our records you have not submitted this Due on 2019-03-27, 23:59 IST. outline assignment.

How to access 1) A LASER is emitting at a power of 250 mW, which class it should be placed? 1 point the portal I Week 1 - Introduction to II LASERs IIIa

Week 2 - IIIb Concept of No, the answer is incorrect. population inversion, Score: 0 2-level, 3-level, Accepted Answers: and 4-level IIIb systems, Components of 2) What is the full form of LASIK? 1 point LASERs

Laser assisted in situ keratomileusis Week 3 - Threshold Lamp assisted in situ keratomileusis condition, Unique Light assisted in situ keratomileusis Properties of Light assisted induced keratomileusis LASER, various parameters of a No, the answer is incorrect. LASER Score: 0

Week 4 - Pulsing Accepted Answers: techniques Laser assisted in situ keratomileusis

3) Which of the following is one of the biggest advantage of using ultrashort pulsed laser in 1 point Week 5 - surgical applications? Mode-Locking technique and types of LASER Very less expensive

Funded by

1 of 3 Friday 10 May 2019 10:17 AM Laser Fundamentals and Applications - - Unit 9 ... https://onlinecourses.nptel.ac.in/noc19_cy13/uni...

Applications of Accepted Answers:Powered by Lasers: Very low tissue damage Non-linear optics, LIDAR, 4) Which of these laser has the maximum penetration depth in biological tissue system? 1 point Laser spectroscopy, CO laser Isotope 2 enrichment and Nd:YAG laser separation. Ar ion laser

Week 8 - Various Excimer lasers Applications of Lasers, Laser No, the answer is incorrect. safety and Score: 0 Summary Accepted Answers: Lecture 36 - Nd:YAG laser Laser Induced 1 Chemistry 5) Which kind of photooxidation involves generation of excited singlet oxygen ( O2*) from 1 point 3 3 triplet oxygen ( O2) through interaction with triplet state of a sensitizer S*? Lecture 37 - Laser Induced Chemistry and Type I photooxidation Ultrafast Type II photooxidation chemical Dynamics Type IIIa photooxidation

Lecture 38 - Type IV photooxidation Lasers in Medical No, the answer is incorrect. Sciences Score: 0

Lecture 39 - Accepted Answers: Lasers in Type II photooxidation Material sciences and 6) Which of the following processes does not involve a LASER irradiation? 1 point engineering and Optical LASIK Communications Bar code scanning Lecture 40 - Laser safety Transmission electron microscopy and summary Two photon fluorescence studies Quiz : Assignment 8 No, the answer is incorrect. Score: 0 Feedback For Accepted Answers: Week 8 Transmission electron microscopy Solution for Assignment - 8 7) Which of the following technique is used to probe chemical bond dissociation dynamics? 1 point

DOWNLOAD LIDAR VIDEOS laser printing

LASIK

Femtosecond pump-probe spectroscopy

No, the answer is incorrect. Score: 0 Accepted Answers: Femtosecond pump-probe spectroscopy

8) What is the following process called? 1 point

ABC+nhn --> ABC* --> ACB*

Photo-ionisation

Photo-isomerisation

2 of 3 Friday 10 May 2019 10:17 AM Laser Fundamentals and Applications - - Unit 9 ... https://onlinecourses.nptel.ac.in/noc19_cy13/uni...

Photo-dissociation

None of the above

No, the answer is incorrect. Score: 0 Accepted Answers: Photo-isomerisation

9) Identify the transition state of the following chemical reaction. 1 point

CH3I + Na --> CH3 +NaI

CH2I - - H - - Na

CH- - I - - NaH2

CH3 - - I - - Na

CHI - - Na - - H2

No, the answer is incorrect. Score: 0 Accepted Answers:

CH3 - - I - - Na

10)The study of transition state of chemical reaction using femtosecond Laser was pioneered 1 point by?

Ahmed Zewail

Richard Bershon

C. Bradley Moore

Andre Persoons

No, the answer is incorrect. Score: 0 Accepted Answers: Ahmed Zewail

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